Gareth Mitchell meets the scientists trying to harvest energy from unlikely sources.
Next year, Russian cosmonauts will simulate a mission to Mars. Richard Hollingham reports.
Claudia Hammond investigates new research connecting moral revulsion with physiology.
Serious criminal cases seem to increasingly hinge on scientific evidence.
Gareth Mitchell examines attempts to introduce green technology to the shipping industry.
Andrew Luck-Baker meets the astronauts preparing to repair the Hubble Space Telescope.
Philip Ball takes a look at a new wave of medical inventions.
Andrew Luck-Baker describes scientists' efforts to sequence Neanderthal DNA.
Peter Evans asks why it has taken so long for climate change to be generally recognised.
Peter Evans investigates recent advances in brain scanning technology.